Improvement in planing and molding-machine



P. DOUGLAS. PLANING AND MOLDING MACHINE.

Patented July 26,1870.

Letters Patent No. 105,657, dated July 26, I870.

ream; DOUGLAS, or NORWICH, oonuncrrcur.

rmrnovsmnn'r m Pnanme AND MOLDING-MACHINE.

The Schedules-referred to in these Letters Patent and making par of the same.

I, FRANK DOUGLAS, of- Norwich, in the county of New London and State of Connecticut, have invented certain Improvements in Planing and Molding-Machines, of which the following is a-specification.

, My invention relates to a' combination of adjustable chip-breakers with the under cylinder or cutterheadot' a planing or molding-maclrine, in such a manner-that long rojecting molding or rabbet-in'g cutters may be used on the under planing-head, and the chip-breakers or rest, over which the. work is "driven, may be adjusted up closely to the knife or cutters, 'so as just to let them pass, and thereby form a-perfect chip-breaker, without which smooth and accurate work cannot be done.

vent its-vibration by the action of the cutters.

' Figure 1 isa perspective view of one end of a plan'- ing or molding-machine, in which the under planinghead is placed, showing the adjustable chip-breakers and angular end piece,.which slide to and from the cutter-head. I

Figure 2 is a vertical longitudinal sectional view of the Sallie.

Figure 3 is a perspective view or three adjustable bed pieces, with irregular shaped ends,'t o conform nearly to the shape of cutters used, r

A is tie frame of the machine, which should be substantially made, to resist the vibrationof the opcrating parts.

B isan angular part, gibbed into the end of the machine,-for raising or'depressing the bed piece-O,

- as will, be seen by'dotted lines, fig. 2..

' G is an adjustablebed, gibbed into the angular end pieceB, and canbe moved 'to or from the cutterflreadi-or raised or depressed, at the will of the opeia'tor.

I .fDis the cutter-head, on which the knife 1!,- or mrrlding-cutters; are firmly bolted. d

E E are phl leys,;;by which the cutter-head is driven. The boxes J J are made so as to raise and depress the cutter-head in the usual way.

H is 'a cross-bar, firmly attached to-tbe sides of frame A, in which a T-shaped groove is made to run lengthwise of the bar, for the reception of nuts for pbolts I I I.

The chip-breakerbed pieces G G, are firmly bolted to the cross-bar H by bolts 1 I I.

They also serve to hold the work firmly, close ,upto the cutters, and pre- The elongated recess in bed piece G, is as deep as the thickness of bolt-head I, and long enough to admit of thedesired movement to or from the cutterhead. 7 l

When a piece of work is tobe planed with straight cutters on the under cutter-head, the bed pieces G G G are moved up as close to the knives as practicable, and with suitable arrangement of feedworks and pressure-bar over the cutter-head, the board or work is moved over-the bed pieces G G G, and the cutterhead D takes olfthe amount of chip required.

The work then gets a bearing on bed piece 0,

which is adjustable upto the board'after the chip is justed to the desired place.

Afterthe molding has passed-the cutter-head, it

,rests upon a jack or inverted piece of molding, made to receive it.

This jack is fastened to part L of bed 0, after it has been dropped below the the topot' machine, as shown 'by dotted lines in fig. 2, and forms aperl'ect guide andrest. for the molding,.,as it is delivered from the machine, which is, an absolute necessity when irregular shapes are worked by the under cutterwhead.

Gla'ims,

I do not claim l t-bet angular end piece B with bed 0, as that was granted me October 12,1869; but

What I claim, and desire to secure by Letters Pat fied.

FRANK DOUGLAS.

Witnesses:

B. H. Roenns,

R. M. LADD. 

